Heatseeker
New Member
Hi all. I'm new to the site. I found it while searching for answers for my troubles. I read a lot of good info here so I thought I'd join to see if I can find the answers I need.
I bought a 95 Southwind late last year. It is built on a GM P90 chassis powered by a 454. The first few times out, I noticed it had a miss. It would mostly occur when I was stating to lug the motor. Like when just starting up a grade. Once I would throttle up and the transmission would kick down, it was no longer noticeable.
I finally found the time to put a tune up on it. I changed the plugs, wires, cap and rotor and the air filter. When pulling the plug wires i found no.8 wire burnt pretty bad. I figured i had found my miss! Now, when I start it, there is a hint of a miss @ idle. Once it is put in gear, there is a pretty noticeable miss present. Once underway, it runs like crap. If I demand much from it, it will pop out of the throttle body and sputter. It will still run, but rough. It runs worse now than before.
I'm no stranger to 454's. I have one in my boat, but it has a 8-71 blower and a couple of carbs on top of it. Whole different animal.
My injected knowledge is pretty limited. So I'm here. Have any of you had similar issues with these TBI engines?
Any help is genuinely appreciated.
I bought a 95 Southwind late last year. It is built on a GM P90 chassis powered by a 454. The first few times out, I noticed it had a miss. It would mostly occur when I was stating to lug the motor. Like when just starting up a grade. Once I would throttle up and the transmission would kick down, it was no longer noticeable.
I finally found the time to put a tune up on it. I changed the plugs, wires, cap and rotor and the air filter. When pulling the plug wires i found no.8 wire burnt pretty bad. I figured i had found my miss! Now, when I start it, there is a hint of a miss @ idle. Once it is put in gear, there is a pretty noticeable miss present. Once underway, it runs like crap. If I demand much from it, it will pop out of the throttle body and sputter. It will still run, but rough. It runs worse now than before.
I'm no stranger to 454's. I have one in my boat, but it has a 8-71 blower and a couple of carbs on top of it. Whole different animal.
My injected knowledge is pretty limited. So I'm here. Have any of you had similar issues with these TBI engines?
Any help is genuinely appreciated.